A dual-nuclear radioactive source focusing device for treatment

Abstract

A double-nuclear radioactive source focusing apparatus used for treatment relates to nuclear medicine equipment. A rotation motor and a bending arm B (8) of a bending arm control mechanism B (9) makea leakproof pipe (6) in an angle control ring B (7) be in a center or an edge portion of an annular track (10). The rotation motor and a bending arm A (2) of a bending arm control mechanism A (1) makea collimator A (5) of a source container A (4) be plugged into one end of a central section hole (21) of the leakproof pipe through an angle control ring A (3) or make the source container A be in the edge portion of the annular track. The rotation motor and a bending arm C (12) of a bending arm control mechanism C (11) make a collimator B (15) of a source container B (13) be plugged into the other end of the central section hole of the leakproof pipe through an angle control ring C (14) or make the source container B be in the edge portion of the annular track. The annular track and the bending arms are used to control the two source containers so that accurate treatment of double-nuclear irradiation is acquired and a disadvantage that a radio element possesses harms to a doctor is prevented.

Description

technical field [0001] The invention relates to nuclear medicine equipment, in particular to a dual-nuclear radioactive source focusing device for treatment. Background technique [0002] It is known that stereotaxic radiotherapy uses the radiation produced by the radioactive source in the nuclear radioactive source container to irradiate the lesion from different directions in a collimated manner, that is, the "gamma ray" produced by the natural decay of the radioactive element "Cobalt 60" passes through the collimated radiation. The direct system gathers them in one focal point, and forms a large-dose focal effect of radiation in the center of the lesion to make the necrosis of the diseased tissue "equivalent to excision" to achieve the purpose of treatment; since this is the damage to normal tissue that can be reduced by the treatment method, and achieve The effect on tumor resection, and the bloodless and painless operation has been rapidly developed in China. The princi...

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Problems solved by technology

[0003] However, the current equipment is bulky, and doctors will be harmed by a very small amount of radioactive elements in the polluted air when they are in close contact with the equipment. Therefore, the open source container is not conducive to the personal safety of doctors; Therefore, this problem has always plagued traditional conventional radiotherapy. Although conventional radiotherapy uses different fractionated irradiation methods and improves radiotherapy Equipment, which has greatly improved the treatment effect, but still has not achieved the expected effect

[0004] This is due to the fact that 201 collimators of 201 cobalt-"60" sources form 201 ray beams and shoot at one point, so it is difficult to obtain the same point effect in a real sense. From this point of view, they are far from optical focus. The energy difference with the surrounding tissue is not very different, and the movement of the patient's body position caused by the micro-vibration caused by the human body's own breathing and pulsation cannot be tracked synchronously, and the corresponding accuracy is greatly reduced, so the dosage effect is not good.

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